Kelvin-Helmholtz instability and resonant flow instability in a 1-dimensional coronal plume model

Details Kelvin-Helmholtz instability and resonant flow instability in a 1-dimensional coronal plume model Kelvin-Helmholtz instability and resonant flow instability in a 1-dimensional coronal plume model

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..537..136a&link_type=abstract

WAVES IN DUSTY, SOLAR, AND SPACE PLASMAS. AIP Conference Proceedings, Volume 537, pp. 136-143 (2000).

Physics

Magnetohydrodynamics And Plasmas, Magnetohydrodynamic Waves

Scientific paper

In a previous paper we have illustrated the concept of resonant flow instability of the trapped modes both in a 1-D slab model and a 1-D cylindrical model for a coronal plume in a cold plasma. We found that much larger values of the velocity shear are needed for Kelvin-Helmholtz than for resonant instability to occur. The aim of this paper is to study the effect of a non-zero plasma pressure on the eigenmodes of the plume structure. We show that the instability most probably to occur in coronal plumes is due to the resonant coupling of slow body modes to local resonant Alfvén waves. These instabilities could lead to disruption of the coronal plumes and to the mixing with interplume plasma. .

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